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13 KiB
1 line
13 KiB
3 years ago
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{"version":3,"file":"gen-mapping.mjs","sources":["../../src/gen-mapping.ts"],"sourcesContent":["import { SetArray, put } from '@jridgewell/set-array';\nimport { encode } from '@jridgewell/sourcemap-codec';\n\nimport type { SourceMapSegment } from './sourcemap-segment';\nimport type { DecodedSourceMap, EncodedSourceMap, Pos, Mapping } from './types';\n\nexport type { DecodedSourceMap, EncodedSourceMap, Mapping };\n\nexport type Options = {\n file?: string | null;\n sourceRoot?: string | null;\n};\n\n/**\n * A low-level API to associate a generated position with an original source position. Line and\n * column here are 0-based, unlike `addMapping`.\n */\nexport let addSegment: {\n (\n map: GenMapping,\n genLine: number,\n genColumn: number,\n source?: null,\n sourceLine?: null,\n sourceColumn?: null,\n name?: null,\n ): void;\n (\n map: GenMapping,\n genLine: number,\n genColumn: number,\n source: string,\n sourceLine: number,\n sourceColumn: number,\n name?: null,\n ): void;\n (\n map: GenMapping,\n genLine: number,\n genColumn: number,\n source: string,\n sourceLine: number,\n sourceColumn: number,\n name: string,\n ): void;\n};\n\n/**\n * A high-level API to associate a generated position with an original source position. Line is\n * 1-based, but column is 0-based, due to legacy behavior in `source-map` library.\n */\nexport let addMapping: {\n (\n map: GenMapping,\n mapping: {\n generated: Pos;\n source?: null;\n original?: null;\n name?: null;\n },\n ): void;\n (\n map: GenMapping,\n mapping: {\n generated: Pos;\n source: string;\n original: Pos;\n name?: null;\n },\n ): void;\n (\n map: GenMapping,\n mapping: {\n generated: Pos;\n source: string;\n original: Pos;\n name: string;\n },\n ): void;\n};\n\n/**\n * Adds/removes the content of the source file to the source map.\n */\nexport let setSourceContent: (map: GenMapping, source: string, content: string | null) => void;\n\n/**\n * Returns a sourcemap object (with decoded mappings) suitable for passing to a library that expects\n * a sourcemap, or to JSON.stringify.\n */\nexport let decodedMap: (map: GenMapping) => DecodedSourceMap;\n\n/**\n * Returns a sourcemap object (with encoded mappings) suitable for passing to a library that expects\n * a sourcemap, or to JSON.stringify.\n */\nexport let encodedMap: (map: GenMapping) => EncodedSourceMap;\n\n/**\n * Returns an array of high-level mapping objects for every recorded segment, which could then be\n * passed to the `source-map` library.\n */\nexport let allMappings: (map: GenMapping) => Mapping[];\n\n/**\n * Provides the state to generate a sourcemap.\n */\nexport class GenMapping {\n private _names = new SetArray();\n private _sources = new SetArray();\n private _sourcesContent: (string | null)[] = [];\n private _mappings: SourceMapSegment[][] = [];\n declare file: string | null | undefined;\n declare sourceRoot: string | null | undefined;\n\n constructor({ file, sourceRoot }: Options = {}) {\n this.file = file;\n this.sourceRoot = sourceRoot;\n }\n\n static {\n addSegment = (map, genLine, genColumn, source, sourceLine, sourceColumn, name) => {\n const {\n _mappings: mappings,\n _sources: sources,\n _sourcesContent: sourcesContent,\n _names: names,\n } = map;\n\n const line = getLine(mappings, genLine);\n if (source == null) {\n const seg: SourceMapSegment = [genColumn];\n const index = getColumnIndex(line, genColumn, seg);\n return insert(line, index, seg);\n }\n\n // Sigh, TypeScript can't figure out sourceLine and sourceColumn aren't nullish if source\n // isn't nullish.\n assert<number>(sourceLine);\n assert<number>(sourceColumn);\n const sourcesIndex = put(sources, source);\n const seg: SourceMapSegment = name\n ? [genColumn, sourcesIndex, sourceLine, sourceColumn, put(names, name)]\n : [genColumn, sourcesIndex, so
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